Title:
The Investigation of Syngas Formation in Co-gasification of Dried Sewage Sludge Mixtures with Wood Biomass
Author(s):
Praspaliauskas, M., Pedišius, N., Vonžodas, T., Valantinavičius, M.
Document(s):
Paper
Poster
Abstract:
Nowadays one of the important tasks is reduction of generated sewage sludge volumes and its effective utilization. However, such utilization of sewage sludge is still considered as subject for investigation, because sewage sludge in most cases contains high concentrations of pollutants, among which are very toxic heavy metals (HM). Part of harmful substances together with flue gases are released into the environment and depending on amount of sludge in the fuel mixture could increase the pollutants in the emission gases significantly. The most common elements found in the emission gases are As, Be, B, Cd, Cr, Cr, Co, Pb, Mn, Hg, Mo, Se Sr, TI, ir V. During the first stage of investigation there were established the main parameters of fuel mixtures consisting of sewage sludge and wood biomass (30ss/70wp, 50ss/50wp, 70ss/30wp) as well as unmixed sewage sludge and wood pellets: moisture, calorific value, amounts of CHNS-O, ash-content, volatile matter, chlorine content, ash melting temperature, heavy metals. Thermogravimetric analysis of various fuel mixtures was done at the selected gasification parameters, when the temperature was constantly raising up to 995 °C every 20 °C /min, and the amount of inlet air was changed respectively 5 %, 10 % and 17.5 %. The composition of singas of gasified sewage sludge and its mixture with wood biomass was studied using gas chromotograph/mass spectrometer (GC-MS).
Keywords:
gasification, heavy metals, sewage sludge, wood biomass, gas chromatograph/mass spectrometer (GC-MS)
Topic:
Biomass Resources
Subtopic:
Biomass feedstock, residues and by-products
Event:
22nd European Biomass Conference and Exhibition
Session:
1CV.3.56
Pages:
217 - 220
ISBN:
978-88-89407-52-3
Paper DOI:
10.5071/22ndEUBCE2014-1CV.3.56
Price:
FREE
